Below is a list of the PRCA rodeos (13 in all) taking place in Montana in August, 2017.
The Professional Rodeo Cowboys Association (PRCA) runs 12 regional rodeo circuits, which culminate in the Ram National Circuit Finals Rodeo each year. The ultimate rodeo is the National Finals Rodeo which takes place over ten days in Las Vegas, Nevada.
8/1/2017 Northeast Montana Fair and Rodeo, Glasgow (http://www.northeastmontanafair.com)
8/2/2017 Big Sky ProRodeo Roundup, Great Falls (http://www.goexpopark.com)
8/3/2017 Richland County Fair and Rodeo, Sidney (http://www.richlandcountyfairandrodeo.org)
8/4/2017 Kootenai River Stampede, Libby (http://www.facebook.com/KootenaiRiverStampede)
8/9/2017 Missoula Stampede Xtreme Bulls, Missoula (https://www.facebook.com/events/1922555478019194/)
8/10/2017 Bozeman Stampede, Bozeman (http://www.bozemanstampede.com)
8/11/2017 Cascade Pro Rodeo, Cascade (http://www.rodeocascade.com)
8/12/2017 Dawson County Fair & Rodeo, Glendive (http://www.dawsonfair.com)
8/17/2017 McCone County Fair PRCA Rodeo, Circle (http://rodeosusa.com/rodeos/mccone-county-fair-prca-rodeo/)
8/17/2017 Northwest Montana Fair and Rodeo, Kalispell (http://www.nwmtfair.com)
8/17/2017 Yellowstone River Round-Up, Billings (http://www.metrapark.com)
8/19/2017 Fallon County Fair & Rodeo, Baker (no website)
8/22/2017 Eastern Montana Fair Rodeo, Miles City (no website)